Pair of New/NOS vintage 6H2N-EB Voskod Rocket preamp driver tubes, vintage Russian Military Spec quality and performance. They have the early silver plates, incomparable vintage Russian Military design, craftsmanship, quiet operation, sound quality and performance. They have matching batch codes, are brand new. These can be used as an upgrade for the 6N2 tube, direct replacement. These can be used as upgrades for the Little Dot and XDuo amps that use 6N2 tubes. The shipping cost includes safe packing, insurance, prompt shipping and tracking number. Buy with confidence, see my feedback. Good Listening, SonnY :)